MonoTorrent

h1. Creating Torrents

The first example shows you how to create a torrent synchronously. The second example builds on this and shows you how to create a torrent asynchronously, so that it does not block the main thread in your application.

*Example 1:*

<pre><code class="java">

        // 'path' is the location of the file/folder which is going to be converted

        // to a torrent. 'savePath' is where the .torrent file will be saved.

        void CreateTorrent(string path, string savePath)

        {

            // The class used for creating the torrent

            TorrentCreator c = new TorrentCreator();

            // Add one tier which contains two trackers

            List<string> tier = new List<string>();

            tier.Add("http://www.example.com/announce");

            tier.Add("http://backup.example.com/announce");

            c.Announces.Add(tier);

            c.Comment = "This is the comment";

            c.CreatedBy = "Alan using " + VersionInfo.ClientVersion;

            c.Publisher = "www.homepage.com";

            // Set the torrent as private so it will not use DHT or peer exchange

            // Generally you will not want to set this.

            c.Private = true;

            // Path can be either a directory *or* a file.

            c.Path = path;

            // Every time a piece has been hashed, this event will fire. It is an

            // asynchronous event, so you have to handle threading yourself.

            c.Hashed += delegate (object o, TorrentCreatorEventArgs e) {

                Console.WriteLine("Current File is {0}% hashed", e.FileCompletion);

                Console.WriteLine("Overall {0}% hashed", e.OverallCompletion);

                Console.WriteLine("Total data to hash: {0}", e.OverallSize);

            };

            // Create the torrent file and save it to the specified path

            c.Create(save_path);

        }

</code></pre>

*Example 2:*

<pre><code class="java">

        // 'path' is the location of the file/folder which is going to be converted

        // to a torrent. 'savePath' is where the .torrent file will be saved.

        void CreateTorrent(string path, string savePath)

        {

            // The class used for creating the torrent

            TorrentCreator c = new TorrentCreator();

            // Fill in the path, trackers as in Example 1

            FillInStandardInformation(c);

            // Create the torrent asynchronously

            c.BeginCreate(c, TorrentCreated);

        }

        void TorrentCreated(IAsyncResult result)

        {

            TorrentCreator c = (TorrentCreator)result.AsyncState;

            // If any errors occured while creating the torrent, they

            // will be rethrown here.

            try

            {   

                // Open the destination file and use the EndCreate overload which

                // writes the data directly to the Stream. 

                using (FileStream stream = File.OpenWrite(savePath))

                    c.EndCreate(result, stream);

            }

            catch (Exception ex)

            {

                Console.WriteLine("Error creating torrent: {0}", ex);

            }

        }

</code></pre>